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Submission #293093

# Submission time Handle Problem Language Result Execution time Memory
293093 2020-09-07T16:12:27 Z Kastanda Simurgh (IOI17_simurgh) C++11
51 / 100
 1758 ms 3456 KB 
// M
#include<bits/stdc++.h>
#include "simurgh.h"
using namespace std;
const int N = 245, MXM = N * N / 2;
int n, m, A[MXM], B[MXM];
bool Del[MXM], Sure[MXM], MR[N];
char M[N];
int P[N], PE[N];
vector < int > Tre, Cyc;
vector < pair < int , int > > Adj[N];
void DFS(int v, int p, int pe)
{
        M[v] = 1;
        P[v] = p;
        PE[v] = pe;
        /*for (auto e : Adj[v])
        {
                int u = e.first;
                int id = e.second;
                if (id == pe || Del[id])
                        continue;
                if (Sure[id] && !M[u])
                        DFS(u, v, id);
        }*/
        for (auto e : Adj[v])
        {
                int u = e.first;
                int id = e.second;
                if (id == pe)
                        continue;
                //if (Sure[id])
                        //continue;
                if (!M[u])
                        DFS(u, v, id);
                else if (M[u] == 1 && !Cyc.size())
                {
                        int nw = v;
                        while (nw != u)
                        {
                                if (!Sure[PE[nw]])
                                        Cyc.push_back(PE[nw]);
                                else
                                        Tre.push_back(PE[nw]);
                                MR[nw] = 1;
                                nw = P[nw];
                        }
                        if (!Sure[id])
                                Cyc.push_back(id);
                        else
                                Tre.push_back(id);
                }
        }
        if (pe != -1 && !MR[v])
                Tre.push_back(pe);
        M[v] = 2;
}

vector < int > find_roads(int _n, vector < int > _u, vector < int > _v)
{
        n = _n;
        m = (int)_u.size();
        for (int i = 0; i < m; i ++)
                A[i] = _u[i], B[i] = _v[i];

        for (int i = 0; i < m; i ++)
        {
                Adj[A[i]].push_back({B[i], i});
                Adj[B[i]].push_back({A[i], i});
        }
        assert(m <= 3e4);

        int sre = 0;
        while (true)
        {
                Tre.clear();
                Cyc.clear();
                memset(M, 0, sizeof(M));
                memset(MR, 0, sizeof(MR));
                DFS(0, -1, -1);
                if (!Cyc.size())
                        break;
                vector < int > Val(n + 1, -1);
                int mx = -1, mn = n;
                for (int i = 0; i < (int)Cyc.size(); i ++)
                {
                        vector < int > tmp = Tre;
                        for (int j = 0; j < (int)Cyc.size(); j ++)
                                if (i != j)
                                        tmp.push_back(Cyc[j]);
                        assert(tmp.size() == n - 1);
                        Val[i] = count_common_roads(tmp);

                        /*printf("Asking :: %d || ", Val[i]);
                        for (int j : tmp)
                                printf("%d ", j);
                        printf("\n");*/

                        mn = min(mn, Val[i]);
                        mx = max(mx, Val[i]);
                }
                for (int i = 0; i < (int)Cyc.size(); i ++)
                        if (Val[i] == mx)
                        {
                                int e = Cyc[i];
                                for (int j = 0; j < Adj[A[e]].size(); j ++)
                                        if (Adj[A[e]][j].second == e)
                                                Adj[A[e]].erase(Adj[A[e]].begin() + j);
                                for (int j = 0; j < Adj[B[e]].size(); j ++)
                                        if (Adj[B[e]][j].second == e)
                                                Adj[B[e]].erase(Adj[B[e]].begin() + j);
                                Del[e] = 1;
                        }
                if (mn < mx)
                {
                        for (int i = 0; i < (int)Cyc.size(); i ++)
                                if (Val[i] == mn && !Sure[Cyc[i]])
                                        Sure[Cyc[i]] = 1, sre ++;
                }
                if (sre == n - 1)
                {
                        vector < int > vec;
                        for (int i = 0; i < m; i ++)
                                if (Sure[i])
                                        vec.push_back(i);
                        return vec;
                }
        }
        vector < int > vec;
        for (int i = 0; i < m; i ++)
                if (Del[i] == 0)
                        vec.push_back(i);
        assert(vec.size() == n - 1);
        return vec;
}

Compilation message

In file included from /usr/include/c++/9/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:33,
                 from simurgh.cpp:2:
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:91:43: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   91 |                         assert(tmp.size() == n - 1);
      |                                ~~~~~~~~~~~^~~~~~~~
simurgh.cpp:106:51: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |                                 for (int j = 0; j < Adj[A[e]].size(); j ++)
      |                                                 ~~^~~~~~~~~~~~~~~~~~
simurgh.cpp:109:51: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  109 |                                 for (int j = 0; j < Adj[B[e]].size(); j ++)
      |                                                 ~~^~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/9/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:33,
                 from simurgh.cpp:2:
simurgh.cpp:133:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  133 |         assert(vec.size() == n - 1);
      |                ~~~~~~~~~~~^~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Correct 0 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 0 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 0 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 0 ms 384 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Correct 0 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 0 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 0 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 0 ms 384 KB correct
14 Correct 5 ms 384 KB correct
15 Correct 7 ms 384 KB correct
16 Correct 6 ms 384 KB correct
17 Correct 4 ms 384 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 4 ms 384 KB correct
20 Correct 4 ms 384 KB correct
21 Correct 4 ms 384 KB correct
22 Correct 3 ms 384 KB correct
23 Correct 3 ms 384 KB correct
24 Correct 3 ms 384 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 2 ms 384 KB correct
27 Correct 3 ms 384 KB correct
28 Correct 1 ms 384 KB correct
29 Correct 1 ms 384 KB correct
30 Correct 3 ms 384 KB correct
31 Correct 3 ms 384 KB correct
32 Correct 2 ms 384 KB correct
33 Correct 3 ms 384 KB correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Correct 0 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 0 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 0 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 0 ms 384 KB correct
14 Correct 5 ms 384 KB correct
15 Correct 7 ms 384 KB correct
16 Correct 6 ms 384 KB correct
17 Correct 4 ms 384 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 4 ms 384 KB correct
20 Correct 4 ms 384 KB correct
21 Correct 4 ms 384 KB correct
22 Correct 3 ms 384 KB correct
23 Correct 3 ms 384 KB correct
24 Correct 3 ms 384 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 2 ms 384 KB correct
27 Correct 3 ms 384 KB correct
28 Correct 1 ms 384 KB correct
29 Correct 1 ms 384 KB correct
30 Correct 3 ms 384 KB correct
31 Correct 3 ms 384 KB correct
32 Correct 2 ms 384 KB correct
33 Correct 3 ms 384 KB correct
34 Correct 734 ms 1912 KB correct
35 Correct 626 ms 1656 KB correct
36 Correct 349 ms 1656 KB correct
37 Correct 10 ms 384 KB correct
38 Correct 712 ms 1784 KB correct
39 Correct 606 ms 1532 KB correct
40 Correct 406 ms 1400 KB correct
41 Correct 1758 ms 2040 KB correct
42 Correct 1723 ms 1896 KB correct
43 Correct 526 ms 1400 KB correct
44 Correct 404 ms 896 KB correct
45 Correct 526 ms 1148 KB correct
46 Correct 337 ms 1016 KB correct
47 Correct 94 ms 760 KB correct
48 Correct 4 ms 384 KB correct
49 Correct 15 ms 384 KB correct
50 Correct 92 ms 760 KB correct
51 Correct 499 ms 1144 KB correct
52 Correct 394 ms 1144 KB correct
53 Correct 380 ms 904 KB correct
54 Correct 613 ms 1220 KB correct
55 Correct 374 ms 1144 KB correct
56 Correct 364 ms 1156 KB correct
57 Correct 387 ms 1024 KB correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 1 ms 384 KB correct
3 Runtime error 24 ms 3456 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Correct 0 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 0 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 0 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 0 ms 384 KB correct
14 Correct 5 ms 384 KB correct
15 Correct 7 ms 384 KB correct
16 Correct 6 ms 384 KB correct
17 Correct 4 ms 384 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 4 ms 384 KB correct
20 Correct 4 ms 384 KB correct
21 Correct 4 ms 384 KB correct
22 Correct 3 ms 384 KB correct
23 Correct 3 ms 384 KB correct
24 Correct 3 ms 384 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 2 ms 384 KB correct
27 Correct 3 ms 384 KB correct
28 Correct 1 ms 384 KB correct
29 Correct 1 ms 384 KB correct
30 Correct 3 ms 384 KB correct
31 Correct 3 ms 384 KB correct
32 Correct 2 ms 384 KB correct
33 Correct 3 ms 384 KB correct
34 Correct 734 ms 1912 KB correct
35 Correct 626 ms 1656 KB correct
36 Correct 349 ms 1656 KB correct
37 Correct 10 ms 384 KB correct
38 Correct 712 ms 1784 KB correct
39 Correct 606 ms 1532 KB correct
40 Correct 406 ms 1400 KB correct
41 Correct 1758 ms 2040 KB correct
42 Correct 1723 ms 1896 KB correct
43 Correct 526 ms 1400 KB correct
44 Correct 404 ms 896 KB correct
45 Correct 526 ms 1148 KB correct
46 Correct 337 ms 1016 KB correct
47 Correct 94 ms 760 KB correct
48 Correct 4 ms 384 KB correct
49 Correct 15 ms 384 KB correct
50 Correct 92 ms 760 KB correct
51 Correct 499 ms 1144 KB correct
52 Correct 394 ms 1144 KB correct
53 Correct 380 ms 904 KB correct
54 Correct 613 ms 1220 KB correct
55 Correct 374 ms 1144 KB correct
56 Correct 364 ms 1156 KB correct
57 Correct 387 ms 1024 KB correct
58 Correct 0 ms 384 KB correct
59 Correct 1 ms 384 KB correct
60 Runtime error 24 ms 3456 KB Execution killed with signal 11
61 Halted 0 ms 0 KB -